We all think Liu Wen is honest girl. You can believe her. [ ]
A. a
B. an
C. the
D. /
答案:B
与棉混纺的染色人纤短纤牛津布
电位滴定法测定水中氯化物时,采用滴定曲线法确定滴定终点,滴定结果如下表:则滴定终点硝酸银消耗的体积为()。
A.25.25ml
B.25.50ml
C.25.75ml